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Tokina FiRIN 20mm F2 FE MF prime lens has been officially announced by the company which is specifically designed for Sony E-mount mirrorless full-frame cameras. This is a manual focus lens that combines a fast aperture with a wide angle of view for full-frame cameras. The price of the lens has not yet been revealed, but it has been listed on BHPhoto store with Notifier tag. 
This lens for Sony E mount has an exterior design is quite fancy with wide focus ring for easy manual focusing, while the aperture ring can be “clicked” for stills photography and “de-clicked” for smoother operation when shooting video. Additionally, electronic contacts are integrated into the mount design to permit seamless communication of distance and aperture information to the camera body in order to support the use of focusing aids, in-camera image stabilization, and an EVF distance scale.
The short flange distance of the Sony E Mount Cameras is of course a major plus point in the performance of the Sony mirrorless cameras especially when the 4K video recording capabilities of the mirrorles cameras being upgraded fast and powerful. This lens fully suitable in terms of using MF assist function, 5 axis image stabilization and view finder electronic distance scale. Lens CPU with optical correction data noticeably contributing to final image processing inside the camera.
The Tokina FiRIN 20mm F2 FE MF is very compact and light-weight, has excellent optical abilities due to perfectly placed 2 all-glass precision molded aspherical elements with 3 Super-Low Dispersion glass lens elements that are greatly reducing aberrations and yielding higher resolution and contrast. 
Tokina FiRIN 20mm F2 FE MF Specifications
- Dimensions of 69 x 81.5 mm
- Weight of 490g
- Mount: Sony E (Full-Frame)
- 35mm Full Frame
- Maximum aperture: f/2
- Minimum aperture: f/22
- Focal Length: 20mm
- 13 Elements in 11 Groups
- Three Super-Low Dispersion Elements
- Two Aspherical Elements
- Nine-Blade Diaphragm
- Multi-Layered Coating
- Angle of View: 92.6°
- Maximum magnification: 0.1x
- Manual Focus and Aperture Control
- Aperture Ring Can Be De-Clicked
- Supports In-Camera Assist Functions
- Focusing range: 0.28 m
- Front filter: 62 mm
